What is #Layer2 ? Simplifying everything to the point that newcomers to Cryptos can understand immediately

You may have seen phrases like:

"zk-Rollup", "Optimistic Rollup", "Layer 2 scaling"... but you don't understand?

Today, I will help you understand with the easiest real-life example

@Ethereum is layer 1, just like when we usually shop on Shopee. There are days like 5/5, for example, during sales, everyone goes hunting for sales, causing an increase in goods, but the delivery side does not have enough resources while you want same-day delivery, so the fees are higher than usual.

When the fees are high, what will people do? Of course, they will find ways to circumvent it, but how to circumvent it? Let's see below.

👉 Normally, you will notice that people will choose a third party for faster delivery like: HOẢ TỐC, SPX, GRAP, external SHIPPER, Viettel... when the order is completed, it sends back to the Shopee confirmation center (#Ethereum ) to help reduce both time and expensive costs, which is called LAYER 2.

In summary:

- Layer 1 = ETHEREUM itself (native, safe, but expensive and slow)

- Layer 2 runs in parallel, processes quickly, cheaply, and then sends results back to #Layer 1 for order confirmation and storage in the system, such as storing the order codes for future complaints or support.